科研之友
微信
新浪微博
Facebook
分享链接
摘要
Reduction of NO with furan under pyrolytic and oxidative conditions is investigated. Experiments in a single pulse shock tube are performed under the conditions covering the temperature range of 1210-1950 K, pressures from 12.4 to 15.3 atm, residence times of 570-1140 Cls, initial NO concentrations of 300-380 ppm, and initial furan concentration of 1.44 mol % for the pyrolysis series and 0.36 mol % for the two oxidation series with equivalence ratio, phi, of 5.0 and 2.4. Furan removed NO at progressively lower temperature as the equivalence ratio decreased. The maximum NO reduction achieved in the temperature range of this study is 50% for pyrolysis and 80% for the oxidation series. The only N-containing products observed are Na and low yields of HCN. A kinetic reaction model which reproduces the experimental data substantially is presented and this is used to compare the efficiency of NO reduction by furan and other hydrocarbons under shock tube and stirred flow reactor conditions. The efficiency of NO removal by furan is comparable to that by propene. Acetylene is more effective than either fuel. Low-temperature conversion of NO by C2H2, however, is predicted to lead to the formation of NO2. The ability of furan, a major product of thermal decomposition of biomass, to reduce NO in the absence of O-2 suggests that biomass may be an efficient,and inexpensive alternative to other reburning fuels.
- 出版日期2001-6
